Hello,
I have question about MEL for B744. When Main tank boost pump is inop there is strange limitation for MZFW.
...
a) Prior to engine start, a minimum of
17,000 lb (7,711 kg) fuel is loaded in the
center wing tank and all center wing tank
fuel is included as part of Zero Fuel
Weight,
...
I do not get it. Well I do but I do not understand why. If there is 15 tons of fuel in center tank why should I lower the MZFW by this. I can use that fuel. It is not "dead" weight.
What was even more confusing was that our engineering department said there is no limitation and it is just info for captain.
I just do not know what is this point trying to say.